Improved rock-driliilng- machine



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GEORGE B. PHILLIPS, OF BOUGHKEEPSIE, NEW YORK, .ASSIGNOR TO A M. CORNELL& CO., OF SAME PLACE. l

Letters Patent No. 96,612, dated November 9, 1869.

.ments in Rock-Drilling Machines;-

To all whom it may concern.-

Be it known that I, GEORQE B. PHILLIPS, -ot' Poughkeepsie, Dutchesscounty, in the State of New York, have invented certain new and usefulImproveand I hereby declare the following' to be a full and exactdescription thereof, reference being had to the accompanying drawings,forming part of this specilication.

The nature or essence of my invention consists in the peculiarcombination and arrangement of devices described and claimed in thefollowing specification, and represented in the drawings accompanyingit.

In the accompanying drawings- Figure l is an elevation of one side of amachine, with my improvements.

Figure 2 is a front elevation of the same.

Figure 3, section and elevation of the collar that turns the drill.

Figure 4, plan of the oblique cross and stand.

Figure 5, side elevation ofthe carriage and lifter.

A A is an oblique cross, made of two sticks of tim-` ber fastenedtogether, and vit may be provided with adj listing-screws, to level iton the rock to be drilled when necessary.

Upon this cross the stand A1 is fastened, to support the pivots A2 ofthe frame B, which may be vibrated in the stand, -to adjust it asdesired, and fastened by the brace-rods B1, which connectit to the rearends of the cross A, as shown in the drawing.

The frame B consists of two side-bars B-B, connected together by thehorizontal cross-bars B2 B2 B2, which are fastened t0 the side bars, andperforated for the drill-bar or shaft c to traverse in wheniit isworked' to drill a rock.

Ihe bed or plate C'may be made in thepform shown in the drawing, or insuch other form as wiilanswer the purpose, and provided with flanges EE, to fasten it to the bars B B higher or lower, or in such position yasmay be desired.

0n the plate C' there are some grooved ways F F, for the carriage G,which is tted to the ways, to traverse inA them, and carry the dog orlifter, which has A, `a horizontal arm,'H, which is perforated for thedrillbar ctopass through it, and a vertical arm, Il', which, when it israised, runs on 'to the wedge I, which raises Y the arm H,l and releasesthe drill-bar, and lets it fall tostrike the rock being drilled.

The lifter H is hung on the carriage'G, so as to vibrate freely onthepin K, and the hole in the arm H is so much larger than the drill-bar,that when it is horizontal, the bar will slip freely through it, butwhen the arm H is inclined alittle, it bindson the bar, and lit'ts'ituntil thewedge I presses o the arm H', when the drill falls, andafterward the carriage G.

The arm H traverses in a slot in the plate O.

To raise the carriage and drill, I fasten two stands L L to the bars B Bor plate C', or both, which stands are perforated for the shaft N toturn in them, which shaft has the segment-gear P fastened toit.V Theteeth of this'geai' take or catch the rack-teeth R on the carriage G,and raise the carriage until the gear passes away from the rack, whenthe carriage ruusdown, and is stopped by the flange Q, on the plate C',in the right position for the segment-gear to take into the rack, andraise it again..

The gear S is fastened to the shaft Nto turn it, and is acted on by thepinion T, turning o'n the stud U in the bar B, and thisl pinion may havea pulley fastened to it, for a band, from some moving power, to operatothe machine.

The shaftN has the fly-wheel M fastened on it, to equalize the motion ofthe machine.

The upper bar Bz has the spiral springs V V fastened'to it and to theyoke W on the drill-bar, which yoke rests on the collar X on thedrill-bal', so that when the bar is raised, the springs are extended toforce itV down, and make it strike a heavy blow when rit is released.

,To rui-nee datetime it strike in e different positioniwhen it fallslmake a collar, c, to turn freely on the drill-bar between the two upperbars B2, which collar thas a hole -in the side, as shown in iig. 3,A forthe end of .the spring e, fastened to the arm c of the collar, toactpagainst the bar O like a pawl, and turn it when the arm vis moved tothe left by the spring b in the bar f, fastenedto the bars B. To turnthe' arm o againstthe action of thc spring b, I fasten the arm g andstand h to the carriage G, and pivot the latch on the's'tand, so that itwill swing against the stand'hl when drawn by the spring Z.

Its operation is as follows:

W'hen the carriage is pushed up, the catch't', being inclined, pressesthe arm c around to the right against the spring b until it slips downby the latch, so that ,when the drill-bar is released by the lifter, thespring s, acting on the arm c, turns the drill-bar until-the rm is4stopped by the plate C', and as the carriage descends, the end of thearm forces the latch open against the action of the springI l, whichcloses again before the carriage ascends to repeat the action.V

Having described -my improvements,

I claim- The combination .and arrangement of the-segmentgear P, rack R,carriage G, lifter H, and wedge I, for I raising and dropping the drill,substantially as described. l

Also, in combination with the devices above claimed, the springs V V andyoke W, for forcing' down the drill-bar, substantially as described.

Also, the combination and arrangement of the collar a, with its spring eand arm c, latch i, and spring b, arranged to operate substantially asdescribed,ibx

the purpose set forth.

GEORGE B. PHILLIPS.

Witnesses:

EDGAR Tnonr, O. E. BROWN.

